CVE-2017-1000479: CSRF
pfSense versions 2.4.1 and lower are vulnerable to clickjacking attacks in the CSRF error page resulting in privileged execution of arbitrary code, because the error detection occurs before an X-Frame-Options header is set. This is fixed in 2.4.2-RELEASE. OPNsense, a 2015 fork of pfSense, was not vulnerable since version 16.1.16 released on June 06, 2016. The unprotected web form was removed from the code during an internal security audit under "possibly insecure" suspicions.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
OPNsenseto a version that resolves this vulnerability.Fixed in 16.1.16 - Upgrade
Upgrade
pfSenseto a version that resolves this vulnerability.Fixed in 2.4.2-RELEASE
Event History
Frequently Asked Questions
What is CVE-2017-1000479?
CVE-2017-1000479 is a vulnerability in pfSense versions 2.4.1 and lower that allows clickjacking attacks resulting in privileged execution of arbitrary code.
How severe is CVE-2017-1000479?
CVE-2017-1000479 has a severity rating of 8.8 (high).
Which versions of pfSense are affected by CVE-2017-1000479?
Versions 2.4.1 and lower of pfSense are affected by CVE-2017-1000479.
How can I fix CVE-2017-1000479?
To fix CVE-2017-1000479, update to pfSense version 2.4.2-RELEASE or newer.
Is OPNsense affected by CVE-2017-1000479?
No, OPNsense is not affected by CVE-2017-1000479.